Backprojection causes this type of blurring in reconstructed images.
What is 1 over R?
100
An integral transform whose inverse is used to reconstruct images from medical CT scans
What is the Radon Transform?
100
This effect produces the light areas on an x-ray image.
What is the photoelectric effect?
100
The ability of an imaging system to distinctly depict two objects as they become smaller and closer together.
What is Spatial Resolution?
200
In cells, once activated, this molecule will produce proteins that promote growth
What are Oncogenes?
200
Decomposes a function into the frequencies that make it up, in a way similar to how a musical chord can be expressed as the frequencies (or pitches) of its constituent notes.
What is the Fourier Transform?
200
This phrase in Greek means to cut a section.
What is Tomos?
200
This is the difference between K alpha and K beta x-rays.
What is the energy level of transitioning electron?
200
The number one cause of cancer according too the class slide is due to this factor.
What is diet?
300
This compound is produced when radiation (UV) reacts with water.
What is hydrogen peroxide?
300
The center of Fourier space is reserved for this type of signal.
What is low frequency?
300
The first CT image was of this section of the human anatomy?
What is the brain?
300
X-rays are emitted from this section of an x-ray tube.
What is the (tungsten) anode?
300
Tumors that stay confined to its original location.
What are benign tumors?
400
Molecules that convey genetic information from DNA to the ribosome, where they specify the amino acid sequence of the protein products of gene expression.
What is mRNA?
400
Considering both iterative or analytical image reconstruction, which one is preferable for use with incomplete scan data.
What is iterative reconstruction?
400
These two processes results in absorption in human tissue and effect CT images. Name one process.
What is photoelectric effect or Compton effect?
400
What is the name of the phantom used in our MATLAB sample exercises.
What is Shepp-Logan?
400
A good material to stop neutrons.
What is water or concrete?
500
This organ's main job is to filter the blood coming from the digestive tract, before passing it to the rest of the body.
What is the liver?
500
The following MATLAB code produces this type of image:
I = ones(100,100);
I(25:75,25:75) = 0;
imshow(I)
What is a black circle surrounded by white space?
500
In 2014, this country had the most CT scanners per 1,000,000 inhabitants.
What is Japan?
500
The term pair production refers to this phenomenon.
Pair production is direct conversion of radiant energy to matter. A photon must be at least equivalent to the mass of two electrons.